as far as I remember correctly, Arrow calls the property that the used election method must be defined for every possible set of transitive rankings "Unrestricted Domain." Approval Voting doesn't meet Unrestricted Domain.
Do you know where? Or could you locate it again?
Could not find "Unrestricted Domain" in the index.
-- == Eric Gorr ========= http://www.ericgorr.net ========= ICQ:9293199 === "Therefore the considerations of the intelligent always include both benefit and harm." - Sun Tzu == Insults, like violence, are the last refuge of the incompetent... === ---- Election-methods mailing list - see http://electorama.com/em for list info
